Sheet-folding machine.



H. M. BARBER.

SHEET FOLDING MACHINE.

APPLICATION FILED MAR. 4, 1914.

Patented Feb. 15,1916.

3 SHEETS-SHEET 1- 1mm PLANOG H. M. BARBER. SHEET FOLDING MACHINE, APPLICATION FILED MAR. 4. 1914.

Patented Feb. 15, 1916.

3 SHEETS-SHEET 2- Wiinesses LUMBIA PLANOGRAPH co., WASHINGTON, D. c.

' sheet folding machines in which fi fiTAT Parana ora ion, g i,

, HOW'ARID'M. BARBER, or sronrneron, CONNECTICUT, assrenon, BY MESNE nssren- MENTS, TO C. B. COTTR ETJL z SONS COMPANY, ,OF NEW YORK, N. Y.,' A CORPORATIOF-al' V or Darren/Ann.

T c'll'whom it may concern:

Beit known that I, HOWARD M. BARBER,

a citizen of the United States, and resident of 'tonington, in the county of NewiLondon and State of Connecticut, have invented a new and useful Improvement in Sheet- Folding l\lachines, of which the following is a specification.

This invention relates to that type of i the sheets are perforated along the line of fold so as to release the air as the sheets are folded for preventing them from bulging, thereby permitting them to be folded flat;

; The object of this invention is to provide novel means for accomplishing the above result, such means including theemployment of a folding blade also as atperforating' blade, both the perforating and the folding operations being accomplished while i the sheets are on their carrier, thereby insuring perfect register for the sheets during these operations.

A practical embodiment of the invention is represented in the accompanying drawings in which, I

Figure 1 illustrates in side elevation so much of a sheet folding machine as will give a clear idea of the invention. Fig. 2 is a diagrammatic section illustrating the parts for passing the sheets through the machine, Fig. 3 is a section taken just inside the side frame. Fig. 4 is an end view ofthe com slitter 1 4. 'Each'section of the first folded bined perforating and folding blade, and .FigLoas a plan view of the'sarne. 5

The rotary sheet carrier 1 is herein shown as a: cylinder and as provided wlth three sets of grippers 2, and three combined sheet perforating and folding blades 3. The web is fed to the rotary cylinder 1,-through the pair of coacting rotary cutters a and 5 and guides 6, 7. The combined sheet perforating and folding blades 8 coact with the yielding pad 8 in the rotary carrier 9, for perforating the sheets along the line of fold. These blades 3 also coact with a set of folding devices 10, in the present instance, floating folding jaws, carried by a rotary carrier 11.

The first folded sheets are transferred from i the folding devices .10, to the grippers 12, of

a rotary carrier 13, in the present instance a cylinder, upon which cylinder the sheets may be slit lengthwise of their travel by'the Specification of Letters Patent.

sheets may be creased lengthwise ,of, its? travel, by next fold.

-16, through the rotary-sheet carrier 17 and its grippers 1 8; i

e "The cylinder'l is arranged to collect two sheets on eachof its three surfaces, the first sheet of each section being held in register on its respectivesurface by the friction pulleys 19, while the grippers 2 areopened to receive the second sheet.

with their coacting combined perforating and foldingblade 3, at the time of-the fold I ing operation and are moved into a posi-I tion substantially tangent to the 'surfaceof' the slitting and creasing cylinder 13 at the time of transferring'the first folded sheets to thegrippers 12; Theusual cam'for float-' 2 ing these jaws 10, is denoted by 24:, and the cams for openingthejaws at the proper times are denoted by 25, 26. The cams: for

opening the grippers 12 on the slitting and creasing cylinder 13, for receiving the sheets from the folding jaws and'transferring them to the gripperslS on the rotary sheet carrier 17, are denoted by 27, 28, respectively. The cam for opening the grippers 18' to receive'the sheets from the slitting 1' cylinder 13 and transfer the same on to the folding table 16, is denoted by 29. It'is to be understood that suitable tape carriers 80, 31, are provided for feeding the sheets onto the said table 16.

v A train of gears 82, 33, 34, connect the rotary cutters 4, 5, with the cylinder 1. A train of gears 35,865.37, connect the rotary cutters with the web feed roll 38. The friction pulleys 19 are driyenfrom'the gear 34:,

through the gear 39, and the rotary gear '9 7 is also driven from the gear 3 4, through the' gear 40. 'The'rotarylsheet carriers 11, 13

and 17 are driven from the gear 34-,through t e g ars $1,, 412, 43- The l tt 1% i dr the creaser 15, along the line of its The sheets are thentransferred' from the cylinder 13 to the folding table The grippers 2 on the collecting cylinder are opened to receive V a sheetfevery revolution of the cylinder, by the stationary cam20. These grippers are i the shaft 23 Patentcd F-elo;15,1916. 7 Application aieaivramh 4, 1914. Seria1No.S22,483

from the gear 42, through the gear 44, and the creasers 15 are drlven from th'ejgear 42, r

through the gear 45.

In operation, the web is fedby the roll 38,

.down between the rotary cutterse, 5, and to the collecting cylinderla guides o, r, This cylinder is arranged to collect a prodnot of two sheets on each of its three sur- I faces.

: 8 of the rotary carrier 9, for the purpose of perforating the sheets along the line of fold just before the folding operation This perforating operation is accomplished by providingthe blade 8 wit-ha serrated edge 46. The further rotary movement of the cylindenl brings the blade, 3 into coaction with the folding jaws 10 of the rotary sheet carrier 11, whereby the sheets will have a transverse fold imparted to themas they are folded off on to therotary sheet, carrier 11. The first folded sheets are then transferred from the folding aws 10 to the grippers 12 on the cylinder 13, where the said sheets may be slit and creased. They'arethen transferred to the foldingtable 16, by the grippers 18 of the cylinder 17.

It will be seen that by perforating the invention, and hence I do not wish to limit myself strictly to the structure herein set forth, but 7 lVhat I claim is:

1.. In a sheet folding machine, a rotary sheet carrier and a device thereon arranged to. respectively perforate and fold 05 the sheet at different points in the travel. of the carrien 2'.-In a sheet folding machine, arotary sheet collector and a device. thereon arranged to respectivelyperforate and fold 2 offv the collected sheets at different points in J the travel of the collector. 7

3. In av sheet P folding machine,gfolding vices, one arranged ito' also perforate the sheet along the line of fold before the fold-r ingoperation at a point different from its folding-off point.

4. In a sheet folding machine, two rotary sheet carriers having coactlng folding de vices, the foldingdevice on one-carrier alsov serving toperforate thesh'eet' along the line of fold before the folding operation atza from its folding-off point.

mechanism including arotary sheet carrier provided with a combined sheet perforating andtucking blade having a serrated edge! 6. ,Ina, sheet foldinga machine, folding mechanism includinga rotary sheet collector.

l mechanism including coacting folding de point in the travel of the carrier different provided with a combined sheet perforating and tucking blade having a serrated edger 1 7 In a." sheet folding machine, folding mechanism including a rotary sheet CEIIIIQI' having a icombined sheet perforating and, V

tucking blade; a rotary carrier having a sur-.

face arranged to coact with the blade for; perforating the sheets and a rotary sheet" carrier having folding jaws arranged to coact with the said blade for foldingsheets along the line of perforations.

8. In a sheet folding machine, folding mechanism including a rotary sheet collector having a combined: sheet perforating and tucking blade, a rotary carrler'havlng. a sur facearranged to coast with the bladelforf r perforating the collected group of sheets,- and a rotary sheet carrier-having folding,

jaws arranged to coact Withfthe said blade for folding the-group of sheets along the line of perforations.

presence of two-witnesses, this twenty'sixth day ofFebruary. 1914:.

VVitnesses-z R; S'r-ILLMAN,

E. M. G'Ran'ng Copies of this patent may be ohtained for five cents each, by'addressing the/5 Commissioner-of Patents,

Washington, D. C.

HOWARD M. BARBER.-. g 

